This diagram from a 1967 documentation shows how to switch high voltage neon lamps with 5V TTL outputs. The circuit can be adapted to function as a shield.
The circuit presented, from the Analog Devices linear integrated circuits manual, has compensation for...
Two 4011 NAND gates are used in this crystal-controlled oscillator. The frequency can reach a few...
This circuit was obtained from Elektor magazine and published in the Encyclopedia of Electronic Circuits...